Shutter settings and motion blur are an aesthetic choice. A relatively low shutter speed is (high shutter angle) results in more blur (smeared motion). A relatively high shutter speed is (low shutter angle) results in less blur (staccato motion). A 180 degree shutter angle is considered "normal", but you decide what's most appropriate for a particular scene or project.

Normal shutter angle of 180 degrees are shown below in bold.

So, for example, with 30p and 29.97p, a shutter speed of approx. 1/60th second is used to produce "normal" motion blur.

Note: The BMPCC pocket cam has a firmware issue that may cause the 180 degree shutter angle setting to produce smeary results. Users report the 172.8 degree shutter angle setting produces good-looking results, very similar to normal 180 degree shutter angle. Hopefully this issue will be addressed in a future firmware.